Home / 2,631.42-3,632.13-1,636.20

Finding the Fourth Proportional to 2,631.42, 3,632.13 and 1,636.20

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Solution

The fourth proportional to 2,631.42, 3,632.13 and 1,636.20 is: 2,258.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.42 : 3,632.13 = 1,636.20 : x
  2. Step 2: Convert to fraction form
    2,631.42/3,632.13 = 1,636.20/x
  3. Step 3: Cross multiply
    2,631.42x = 3,632.13 × 1,636.20
  4. Step 4: Simplify right side
    2,631.42x = 5,942,891.11
  5. Step 5: Solve for x
    x = 5,942,891.11/2,631.42
  6. Step 6: Final answer
    x = 2,258.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.